CVE-2018-5506 is a critical vulnerability affecting multiple versions of F5 BIG-IP, specifically versions 13.0.0, 12.1.0-12.1.2, 11.6.1, 11.5.1-11.5.5, and 11.2.1. This flaw allows an unauthenticated attacker to perform a brute-force attack on the em_server_ip authorization parameter within Apache modules, potentially revealing SSL client certificates used for mutual authentication between BIG-IQ or Enterprise Manager and managed BIG-IP devices. With a CVSS score of 9.8 (CRITICAL), the vulnerability has a network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 11.5.1, <= 11.5.5CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* | ||
>= 12.1.0, <= 12.1.3.1CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* | ||
11.2.1CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_local_traffic_manager:11.2.1:*:*:*:*:*:*:* | ||
11.6.1CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_local_traffic_manager:11.6.1:*:*:*:*:*:*:* | ||
13.0.0CPE matchmatch criteria | cpe:2.3:a:f5:big-ip_local_traffic_manager:13.0.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.